Analysis of the application and impact of carbon dioxide media on the corrosion state of oil and gas facilities

Abstract

Products of several currently operated production facilities (Bovanenkovskoye, Urengoyskoye oil and gas condensate fields, etc.) contain an increased amount of corrosive CO2. Effect of CO2 on the corrosion of steel infrastructure facilities is determined by the conditions of its use. Carbon dioxide has a potentially wide range of applications at oil and gas facilities for solving technological problems (during production, transportation, storage, etc.). Each of the aggregate states of CO2 (gas, liquid and supercritical) is used and affects the corrosion state of oil and gas facilities. Article analyzes the results of simulation tests and evaluates the corrosion effect of CO2 on typical steels (carbon, low-alloy and alloyed) used at field facilities. The main factors influencing the intensity of carbonic acid corrosion processes in the main conditions of hydrocarbon production with CO2, storage and its use for various technological purposes are revealed. Development of carbon dioxide corrosion is accompanied and characterized by the localization of corrosion and the formation of defects (pitting, pits, etc.). Even alloyed steels are not always resistant in the presence of moisture and increased partial pressures of CO2, especially in the presence of additional factors of corrosive influence (temperature, aggressive impurities in gas, etc.).

Hydrodynamic Modeling and Evaluation of Partial Substitution of Cushion Gas During Creation of Temporary Underground Gas Storage in an Aquifer

“…sufficient permeability and porosity, and a reliable fluid seal to prevent gas migration and crossflows. Other mechanisms that determine the efficiency of underground gas storage include rock heterogeneity, relative permeability hysteresis, gas dissolution, and gas miscibility (22).…”

Issues of the Impact of Granulated Sulfur Transportation on the Environmental Components

“…Extraction of elemental sulfur is of crucial importance, since H 2 S is hazardous to the environment, extremely flammable and can dissolve in petroleum products, degrading their quality [34,35]. The Claus process involves the partial combustion of H 2 S using air or O 2 under enriched conditions to form elemental sulfur [36,37].…”

The role of multi-phase metal content in corrosion and premature failure mitigation of steel equipment in oil refiniers. Part 1

“…Corrosion requires three main pillars together and at the same time to initiate and grow: corrosive components (CO 2 , H 2 S, Cl-, etc. ), electron-consuming components (components for consuming corrosion electrons) (depolarizing components at the cathodic areas), electron-conducting components (components for electronic conduction from corroded (anodic) areas to cathodic areas that consume these electrons by depolarizers) [6,7]. The absence of either of them leads directly to slowing down the corrosion process and even stopping it completely.…”